A touchpad comprising a supporting medium ( 3 ) supporting a plurality of spaced apart conductors ( 2 ) in which there is no electrical contact between the conductors, each conductor being sensitive to the proximity of a finger ( 1 ) to vary the capacitance of said conductor ( 2 ) to detect the presence of said finger ( 1 ) positioned close to that conductor, the touchpad further comprising a means ( 4 ) to concentrate electric field between conductors ( 2 ) towards the plane of the supporting medium ( 3 ).
展开▼
